Functions and Scatterplots Review

Which set of ordered pairs represents y as a function of x?

• A

• B

• C

• D

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

Does the mapping diagram show y as a function of x?

• Yes

• No

• I'm Confused

• May I phone a friend?

What is the definition of function?

• Has inputs and outputs
• Each y-value corresponds to one x-value.

• Each x-value corresponds to one y-value.

• x-values and y-values

A relation contains the points (1,2), (2,-1), (3,0), and (5, -1). Which statement accurately describes this relation?

• The relation does not represent y as a function of x, because each value of x is associated with a single value of y.

• The relation represents y as a function of x, because one value of y is associated with two values of x.

• The relation does not represent y as a function of x, because each value of y is associated with two values of x.

• The relation represents y as a function of x, because each value of x is associated with a single value of y.

Which graph does NOT represent y as a function of x?

• F

• G

• H

• J

Which scatterplot does NOT suggest a linear relationship between x and y?

• A

• B

• C

• D

Please view the image to answer the question.

• F

• G

• H

• J

Based on the scatterplot, what is the best prediction of the number of hours one of Phil's friends spends sleeping when the friend spend 1 hour playing video games?

• 9 hours

• 8 hours

• 10 hours

• 7 hours

Please view the image to answer the question.

• F) 10 games

• G) 20 games

• H) 13 games

• J) 15 games